import java.io.UnsupportedEncodingException;
import java.util.Collection;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;
import org.unique.common.tools.CollectionUtil;


public class Main {

	public static void main(String[] args) throws UnsupportedEncodingException {
		List<String> db = CollectionUtil.newArrayList();
		db.add("/user/1");
		
		List<String> qiniu = CollectionUtil.newArrayList();
		qiniu.add("/user/2");
		Collection<String> c =  CollectionUtils.subtract(qiniu, db);
		System.out.println(c);
	}

}
